From my experience, they usually don't know ETAs. Could be a day, a week or a month. Very rarely do they know about when they'll come in. All they know is that they ordered it and if it has been produced and shipped. With the slow boat from China there's no telling when it'll actually arrive. (slow boat = customs, delays, etc.)
But I have seen them give ETAs once or twice, so they might be able to. Just wanted to
throw that out there since it's after hours and you might not get a response for a bit.